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检定规程规定0—10毫米百分表应检定100个点的示值误差。过去这一工作是由工人在线纹比较仪上进行检测的,不仅视力疲劳、劳动强度大,而且人为误差大。成都科技大学和成都量具刃具厂共同研制的用于检定百分表示值精度和回程误差的BJY-1型百分表自动检查仪已于1976年5月初步制成,并以三年的时间对该仪器进行了必要的试验、研究和生产考核,1979年6月17日经“百分表自动检查仪鉴定会”鉴定通过。BJY-1型仪器运用了光栅、光电对线及电子计算等新技术实现了百分表检定过程和数据处理的自动化。它的主要技术指标是:
Test procedures specified 0-10 mm dial indicator should be tested 100 points of indication error. In the past, this work was carried out by workers on an on-line pattern comparator, which not only impaired vision, but also increased labor intensity and human error. Chengdu University of Science and Technology and Chengdu Measuring Tool and Cutting Tool Factory jointly developed for the verification of percent accuracy and return error of the BJY-1 type of dial indicator automatic checker was first made in May 1976 and a three-year time The instrument was the necessary test, research and production assessment, June 17, 1979 by the “dial indicator automatic identification will be” identified by. BJY-1 instrument using grating, photoelectric on-line and electronic computing and other new technologies to achieve the dial indicator verification process and data processing automation. Its main technical indicators are: